How to read an image file from Download folder and show it as bitmap in ImageView of your Android App?

This video shows the steps to read an image file from the download folder and then show it as bitmap in imageView widget of your Android App’s layout.

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Complete source code and other details:

package com.programmerworld.imagefilefromdownloadfolder;

import static android.Manifest.permission.READ_MEDIA_IMAGES;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;

import android.content.pm.PackageManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.storage.StorageManager;
import android.os.storage.StorageVolume;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageView;

import java.io.File;

public class MainActivity extends AppCompatActivity {
    private ImageView imageView;
    private EditText editText;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ActivityCompat.requestPermissions(this,
                new String[]{READ_MEDIA_IMAGES},
                PackageManager.PERMISSION_GRANTED);
        editText = findViewById(R.id.editText);
        imageView = findViewById(R.id.imageView);
    }

    public void buttonImageShow(View view){
        StorageManager storageManager = (StorageManager) getSystemService(STORAGE_SERVICE);
        StorageVolume storageVolume = storageManager.getStorageVolumes().get(0); // 0 - internal storage; 1 - external storage

        File fileInputImage = new File(storageVolume.getDirectory().getPath()
                + "/Download/"
                + editText.getText().toString()
                + ".jpeg");
        Bitmap bitmapImageFile = BitmapFactory.decodeFile(fileInputImage.getPath());
        imageView.setImageBitmap(bitmapImageFile);
    }
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">

    <uses-permission android:name="android.permission.READ_MEDIA_IMAGES"/>

    <application
        android:allowBackup="true"
        android:dataExtractionRules="@xml/data_extraction_rules"
        android:fullBackupContent="@xml/backup_rules"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.ImageFileFromDownloadFolder"
        tools:targetApi="31">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="78dp"
        android:layout_marginTop="48dp"
        android:onClick="buttonImageShow"
        android:text="Show Image Download Folder"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/editText" />

    <EditText
        android:id="@+id/editText"
        android:layout_width="367dp"
        android:layout_height="68dp"
        android:layout_marginStart="22dp"
        android:layout_marginTop="27dp"
        android:ems="10"
        android:hint="Image file name ..."
        android:inputType="text"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="307dp"
        android:layout_height="290dp"
        android:layout_marginStart="56dp"
        android:layout_marginTop="72dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/button"
        app:srcCompat="@drawable/ic_launcher_background" />

</androidx.constraintlayout.widget.ConstraintLayout>